better error handling and user friendly error messages
Fix ExecCmd return inconsistency; ensure we return best loss in edge cases
Merge branch 'master' of git://github.com/JohnLangford/vowpal_wabbit
Add -b option and Brent's Method - not yet ready for prime time; fix edge-case of missing optimum
Add support for -t test-set; fix @$cmd vs $cmd bug in ExecCmd
better -t usage explanation
support invert_hash for multiclass problem
Merge pull request #142 from arielf/master

vw-hypersearch has new option to optimize against test set
Merge pull request #143 from eHarmony/truely_readable

support invert_hash for multiclass problem
Merge pull request #139 from eHarmony/save_best

--early_terminate
Searn bug fix from Alex Hudek
change 1/0 to FLT_MAX
fixed print bug on save_resume
Merge branch 'master' of github.com:JohnLangford/vowpal_wabbit
random-poly utility for random-noise demo
x-vs-y.r  check and plot correlation between two continuous variables
vw-demo:  scripted noise-vs-signal demo of vw
README: explanation of signal-vs-noise vw-demo
Makefile for signal-vs-noise vw demo
README: add URL where presentation can be found.